Cincinnati Open: WinnerPolymarket historical data and price history
Cincinnati Open: Winner: a standalone Polymarket sports event with 51 markets and $32.2K in lifetime traded volume. All markets have resolved, each with its winning outcome stored. Marketlens records every market's order book at full depth, coverage running since August 16, 2026 through August 22, 2026.
Data as of 2026-09-28
Top 5 of 51 markets
Query this event
from datetime import datetime, timedelta, timezone
from marketlens import MarketLens
client = MarketLens()
[event] = client.events.list(q="Cincinnati Open: Winner", take=1)
for market in client.events.markets(event.id, take=5):
print(market.question, market.outcomes[0].last_price)
# the order book behind any market, at any past moment
# a free key reads markets open in the last 7 days
book = client.orderbook.get(market.id, at=datetime.now(timezone.utc) - timedelta(days=2))
print(book.midpoint, book.bid_depth, book.ask_depth)Common questions
What data does Marketlens have for "Cincinnati Open: Winner"?
51 markets with full depth L2 order book history recorded since August 16, 2026, market metadata with lifetime traded volume, and the winning outcome for each market once it resolves.
How much has "Cincinnati Open: Winner" traded on Polymarket?
$32.2K in cumulative traded volume across the event's markets. Per market volumes are listed in the table on this page.
How do I download "Cincinnati Open: Winner" data?
Query it through the REST API or the Python SDK (pip install marketlens): search events for "Cincinnati Open: Winner", list the event's markets, then pull each market's order book history. Bulk Parquet exports cover full markets for offline work; the free tier reads markets open in the last 7 days and Pro the full archive.
Related events: F1 Drivers' Champion, Pro Football: 2027 Champion, MLB World Series Champion 2026, or the full event list.
Try it
Pull this event's books in one call
The free tier includes 2M data rows and every market open in the last 7 days, no card required.
$ pip install marketlens